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Ultra-high-precision clip-type tuner now featured with a longer life span.

The "Custom Shop" series exemplifies the high quality KORG tuners is known for. As its latest addition, we introduce a top-level model tuner that can be attached directly to the head of your guitar/bass.

The Sledgehammer Custom 100 provides an amazing battery life of approximately 100 hours using only one AAA battery. The easy-to-use shuttle switch is now equipped with an illuminated shuttle light for even better visibility. In addition to a 3D visual meter, you can also use professional ultra-high precision tuning with an accuracy of ±0.1 cents. It's the ultimate high-spec clip-type tuner.

Sledgehammer Custom 100 - Introduction Movie

Part of KORG’s “Custom Shop” series, a mark of ultimate quality

Amazing battery life of approximately 100 hours

New type of illuminated shuttle switch

3D visual meter creates a revolutionary visual effect

Ultra-high tuning accuracy of +/- 0.1 cents

Three meter display modes

A clip mechanism that provides strong holding power as well as flexibility

Calibration, auto power-off, and memory backup functions

Lineup includes limited-edition color variation models

“Custom Shop,” the mark of ultimate quality

KORG tuners have a 40-year history that began with the world’s first needle-style tuner. While we have produced many different types, including tuners with unrivaled precision and ones with epoch-making functionality, these products were made possible by KORG’s unwavering commitment to quality. In other words, our attitude of sincerely listening to the voice of the users, our revolutionary ideas, and our high level of technological ability are what underlie the long history of KORG tuners.

Now, KORG announced a new lineup aimed at achieving even greater innovation. The name “Custom Shop” designates this tuner as a flagship model that is a representative of KORG’s highest levels of technology. Its design features a beautiful meter displayed by a CMD panel, ultra-precision detection, and careful attention paid to appearance and feel. KORG’s high technological ability and commitment to quality have taken shape as the “Custom Shop” name.

Amazing 100-hour battery life

The Sledgehammer Custom 100 features a newly improved design that takes advantage of its distinctive cylindrical body. By using a single AAA battery, it allows approximately 100 hours of continuous operation. This long-life design provides seven times the operating time of the previous model, and is also extremely economical. A tuner is an indispensable companion for an instrument, and this unit will be a reliable partner for any musician's daily practice or performance.

New illuminated shuttle switch

A major feature of the Sledgehammer is the shuttle switch that can be easily operated with a single hand. just as if you were turning a tuning peg of your instrument while playing a string. This shuttle switch undergoes a further evolution on the Sledgehammer Custom 100, adding a cool illuminated shuttle light to ensure good visibility even on a dark stage. Improved design also enhances the durability and feel of the clip.

3D visual meter creates a revolutionary visual effect

The 3D visual meter exemplifies the Custom Shop series. A large and easily visible note name indication and the distinct movement of brightly illuminated LEDs make the pitch difference and change instantly recognizable. This new 3D visual meter makes it simple to tune with a precision of ±0.1 cent.

Ultra-high tuning accuracy of +/- 0.1 cents

Designed with the professional user in mind, KORG’s Sledgehammer Custom 100 offers extremely accurate tuning with a detection range of +/- 0.1 cents, a level of precision that is uncommon of clip-on tuners.

Three meter display modes

Choose from three meter display modes to suit your playing style. In addition to the standard “Regular mode,” you can use “Strobe mode” or “Half-strobe mode” in which the direction and speed of meter movement indicate the pitch change for easy visualization of even minute differences.

A clip mechanism that provides strong holding power as well as flexibility

The clip is designed to make the connection with your instrument as efficient as possible, ensuring a firm grasp. The Sledgehammer Custom 100 firmly adheres to a variety of guitar and bass headstocks and double mechanism of a movable arm and ball joint simultaneously provide both durability and free range of angle settings. Players have the flexibility to position the tuner wherever they need.

Calibration, auto power-off, and memory backup functions

A variety of functions are available to support your various tuning endeavors: the calibration function allows for a variety of concert tunings, the auto power-off function, and the memory backup function.

Limited-edition color variation models

In addition to the standard black, the Sledgehammer Custom 100 is available as a limited edition in vivid red, bright blue, or sophisticated white.